Concrete tank.



J. F. HARRIS.

CONCRETE TANK.

APPLICATION FILED APR. 2B. 1915.

J. F. HARRIS.

CONCRETE TANK.

APPLICATION FILED APII.28, I9I5.

Pafenied Apr. 3, 1917.

2 SHEETS-SHEET 2.

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JOHN F. HRIS, F WILMINGTON, NOBTHCAROLN, ASSIGNORTG CEMENT FROID-x G .A OLA.

ners coman; or WILMINGTON, NORTH CAROLINA, A CORPORATION or Noam eoNcnnrn TANK.

Specification of Letters Patent. Patgnmdpp, 3, 19t?,

Application mea Aprnaa, 1915. seriaiNo. 24,518.,

To all whom t may concern.-

Be it known that ll, JOHN F. HARRIS, a

citizen of the AUnited States, residing at Wilmington, in the count of New Hanover and State of North Caro ma, have invented certain new and useful Improvements in Concrete Tanks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

rlhis invention relates to reinforced concrete tanks, and one of the principal objects of the invention is to provide a reinforced concrete tank. of comparatively simple construction, which will be light in weight and strong and durable in use.

Another object of the invention is to provide a concrete tank which will require a very simple apparatus for making it, and the manufacture of which tank may be carriedon continuously Without requiring the services of highly skilled operatives.

'llhe foregoing and other objects may be attained by means of the construction illustrated in the accompanying drawings, in which:

Figure 1 is a vertical sectional view of a core and a mold having reinforcements,

placed between the core and mold in condition to receive the concrete material to manufacture the tank. c

Fig. 2 is a top plan view of the same.

Fig. 3 isk a sectional view of the upper portion of the mold after a quantity of concrete has been poured into the mold, the core being shown 1n elevation.

Flg. 4 is a' similar view, showing a still further step in the manufacture of the tank.

Fig. 5 is a similar view of the same after another step in the manufacture of the tank has been taken, and

Fig. 6 is a vertical sectional view taken through a finished` tank, having a cover applied thereto.

and the mold l are placed in the position shown in Fig. l of the drawings, and'the reinforcing element 4, which consists of a sheet of metal lathing, having slots and intermediate bars, is placed between the core and mold. To hold the reinforcing element 4' in proper relative position between the core and mold wooden strips 5 are inserted between the mold 1a and the reinforcing element and between said reinforcing element and core at dilerentpoints around inside the mold, as

shown more clearly in Fig. 2. The reinforcing element 4 extends up above the upper edge of the mold la. In this condition the concrete material 6 is poured between the mold and the core and the strips 5 are then withdrawn. The concrete material is poured to the height shown in Fig. 3, that'is to a point below the top of the core. A hoop 7 of metal lathing or similar material is placed upon the top of the concrete between the reinforcing element 4 and the mold l, as shown in Fig.v 3, and concrete is then poured in up to the height shown in Fig. 4 ofthe drawing. A disk 8 of metal lathing, or other form of metal reinforcement, is placed in position, as shown in Fig. 4, on top of the concrete and the outer edge 9 of the reinforcing element 4 is bent over onto the disk 8, and then the concrete material is` again poured into the mold to form the bottom 10 of the tank, which terminates practically at the outer edge of the hoop 7. After the concrete material hasproperly set the mold 1a is removed and the finished tank is removed from the core.

As shown in Fig. 6 the tank is inverted to dispose its open upper end on top, and a suitable cover 1 having reinforcing elements 12 and 13, preferably connected by pins or wires 14, closes the tank, said cover having an enlarged central portion 15, which fits within the tank and a flange 17, which eX- .tends out slightly beyond the "outer surface of said tank.

From the foregoing it will be obvious that I a tank made in accordance with this invention will be very strong and durable and that Various chan may be made in the dea of the invention without de antinig claims.

from the spirit and scope es 'define in the Y side and bottom well, a, reinforcing element of sheet metal lathing embedded inthe side well and extending .to e point kbelow the upper side of the bottom walkie. ange-on the lower end of said element, said flange extending beyond the side wall into and embedded in the bottom wall, e.. reinforcing disk of metal lathing embedded in the bottom wall, seid disk extending beyond the bottom wall into the side wall and resting upon the said ange,/and a wide metal hoop embedded in the side wall in spaced relation tothe reinforcing element therein,- said hoop extending from the lower end of the side wall to a point abovev said flange and disk, said ange and the overlapping portion of the disk increasing the thickness and strength of the reinforce at the juncture of the side and bottom walls and at points in both directions Ybeyond the juncture, and'said hoo reinforcing the lower edge of the side wal and e portion of the side wall extending from' its lower edge to a point above the ange and disk to prevent the side and bottom in spaced relation to the reinforcing element therein, said hoop extending from the lower end of the4 side wall to a point above the reinforcing-element embedded in the bottom wallz and said hoop preventing the lower portion of the bottom wall and the lower portion of the side and bottom walls from crackingat a point below the reinforcing elements.

lIn testimony whereof I aiix my signature in presence of two witnesses.

I JOHN F. HARRIS.

Witnesses:

W. RANDOLPH, M. F. H. GOUVERNEUR. 

